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Thread: Sage and Wise BMW Megaposters, Need Your Opinion on my 07 550i

  1. #1
    Join Date
    May 2004
    Posts
    258

    Default Sage and Wise BMW Megaposters, Need Your Opinion on my 07 550i

    I have a 2007 E60 N62 550i with 191,000 miles on it. I've been staving off the inevitable valve stem seals replacement with Liqui Moly Oil Saver for some time. My son uses it for his 80 mile daily commute. Didn't pass its CA emissions test due to failing the "smoke check" which is I think just a visual. It does smoke after idling a bit. The oil saver had that covered until my rude awakening today. It's a 14 year old car, it has 191,000 miles on it, runs strong, looks good. Never in a collision. But it does have rough cold start idle related to a worn eccentric shaft (or two.) My son has gotten used to keeping it at a fast idle until it is warmed up.
    I'm pondering my options.

    Dump it as a mechanics special and buy a lower mileage N52 powered car for him to rack the miles up on.
    There are some pro's here, better mileage, fewer issues, fewer leaks than the N62
    Rent the stem seal tool and buy the seals and VC gaskets and coach my kid through that ugly chore.
    The main pro is that this car is loaded, Logic 7 sound, Sport package (suspension/interior upgrades) heated seats, tinted windows

    The main con for the stem seal torture is that the car will still have the eccentric shaft issue and 191,000 miles on it.
    Link to my M50 engine rebuild thread
    http://www.bimmernut.com/forum/showthread.php/43339-M50-Eng-4L30E-Trans-RRR-Far-More-Than-I-Ever-Expected?highlight=93+525+paul


  2. #2
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,755

    Default

    Valve stem and seals are common issues and relatively easy to replace. The feat to overcome this to actually do it. Not sure what the eccentric shaft is so I can not comment on that.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3
    Join Date
    Jul 2004
    Posts
    760

    Default

    Quote Originally Posted by 632 Regal View Post
    eccentric shaft
    Yeah it controls the amount of valve lift and the timing in conjunction with the camshaft. Literally the part that makes "VTEC kick in yo".

    deleted air conditioning

  4. #4
    Join Date
    May 2004
    Posts
    258

    Default

    Project completed earlier this year. Passed CA smog, has not had whatever it was that I misdiagnosed as an eccentric shaft issue (cold start rough running, throwing codes like ). The ecc shafts looked pristine and while tedious and super time intensive, not a horrible repair. 193,000 miles and counting...
    Link to my M50 engine rebuild thread
    http://www.bimmernut.com/forum/showthread.php/43339-M50-Eng-4L30E-Trans-RRR-Far-More-Than-I-Ever-Expected?highlight=93+525+paul


  5. #5
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,755

    Default

    Quote Originally Posted by 93 525 Paul View Post
    The ecc shafts looked pristine and while tedious and super time intensive, not a horrible repair. 193,000 miles and counting...
    Just breaking in, a long way to go. Good job man!
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

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